Laser-induced temperature-rise measurement by infrared imaging

Jianhui Gu; Siu Chung Tam; Yee Loy Lam; Qiguang Zheng; Xueqin Wei

doi:10.1117/12.387546

7 June 2000 Laser-induced temperature-rise measurement by infrared imaging

Jianhui Gu, Siu Chung Tam, Yee Loy Lam, Qiguang Zheng, Xueqin Wei

Proceedings Volume 3933, Laser Applications in Microelectronic and Optoelectronic Manufacturing V; (2000) https://doi.org/10.1117/12.387546
Event: Symposium on High-Power Lasers and Applications, 2000, San Jose, CA, United States

Abstract

The characteristics of laser-induced temperature-rise are important information in laser material processing. In our experiment, several kinds of metals such as mild carbon steel, stainless steel, aluminum alloy and copper, and non-metals namely epoxy and polymethyl methacrylate were irradiated by using a high-power CW CO₂ laser beam, while the temperature distribution and variation on their surfaces were measured by using a fast scanning infrared camera to image the laser irradiated area. The CO₂ laser beam power was varied from several tens of Watts to several hundreds of Watts for the irradiating of different materials. 2-D and 3-D temperature distributions and the temperature variations against the time of laser irradiation on certain points within the laser-irradiated area were recorded and measured. It is found that the temperature distribution on the surfaces of the irradiated materials was tightly related to the laser beam mode, and the temperature fluctuations corresponded to the laser beam power fluctuations. The results of this research could be applied to laser material processing.

Citation Download Citation

Jianhui Gu, Siu Chung Tam, Yee Loy Lam, Qiguang Zheng, and Xueqin Wei "Laser-induced temperature-rise measurement by infrared imaging", Proc. SPIE 3933, Laser Applications in Microelectronic and Optoelectronic Manufacturing V, (7 June 2000); https://doi.org/10.1117/12.387546

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